8117925 has 24 divisors (see below), whose sum is σ = 14213376. Its totient is φ = 4074240.

The previous prime is 8117903. The next prime is 8117929. The reversal of 8117925 is 5297118.

It is not a de Polignac number, because 8117925 - 2¹² = 8113829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8117929) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1909 + ... + 4458.

It is an arithmetic number, because the mean of its divisors is an integer number (592224).

Almost surely, 2^8117925 is an apocalyptic number.

8117925 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

8117925 is a deficient number, since it is larger than the sum of its proper divisors (6095451).

8117925 is a wasteful number, since it uses less digits than its factorization.

8117925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6397 (or 6392 counting only the distinct ones).

The product of its digits is 5040, while the sum is 33.

The square root of 8117925 is about 2849.1972553686. The cubic root of 8117925 is about 200.9779189129.

The spelling of 8117925 in words is "eight million, one hundred seventeen thousand, nine hundred twenty-five".